Hatch-door



(No Model.)

W STEVENS.

HATGH DOOR.

,410. Patented Apr. 3, 1888.

UNITED STATES PATENT which.

XVILLIAM STEVENS, OF PHILADELPHIA, PENNSYLVANIA.

HATCH-000R.

SPECIFICATION forming part of Letters Patent No. 380,410, dated April 3, 1888.

Serial No. 255,859. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM: Srnvnivs, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Hatch-Doors, of which the following is a specification.

My invention relates to doors for'hatchways; and it consists of certain improvements, which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof.

My invention has reference more particularly to those hatchways for elevators in which the guide-posts are at the'corners of the hatchway diagonally opposite each other instead of on the sides. In such a hatchway it is a difficultthing to entirely close the way by a hinged door, for such a door, if hinged on one of the sides of the hatchway, cannot be raised and lowered because of the interference of at least one of the guide'posts. To obviate this diffi culty is the object of my invention.

Referring to the drawings, Figure l is a perspective view of a hatchway, showing my improved door. Fig. 2 is a plan view of the same with the door closed. Fig. 3 is a side elevation of the same with the door raised. Figs. 4 and 5 are views of the universal joint of the connecting-link used for the purposes and in the manner hereinafter described.

A is the floor, having the opening or hatchway B. A shelf or rest, I), is made upon the edge or edges of the floor as a rest for the door when it is closed.

Crepresents the guide-posts at two corners of the hatchway, and may have guiderails H on their faces for the elevator-cage.

D is the main part of the hatch-door. It is evident that if this door D were as large as the opening or hatchway it could not be raised or lowered on account of the guide-posts G,which would be in the way. To overcome this I make the main part of the door D slightly narrower than the opening or way. This main part of the door I) is hinged to the floor A at d, and may readily be raised and lowered entirely clear of the guide-post 0 because of its smaller size. This will of course leave an opening between the side of the door and the edge of the hatchway. I cover this opening by means of an auxiliary door, E, preferably slightly wider than the opening and of substantially the same length as the main door D. The corners of the main door D and of the auxiliary door E are cut away to fit the hatchway where the guide-posts O are situated. This auxiliary door E is connected with the main door D by means of parallel links F, secured at f to the two doors. These links F, I prefer to arrange at right angles to the edge of the piece E, as I find it more efficient, and I prefer also to use two links, though more may be employed, if desired. These links F may be arranged above both of the door parts D and E, as shown in Figs. 1 and 3, or above door part1) and under the part E, as shown in Fig. 2, this latter being the usual construction. I G is a link-connection joining one of these links F or the auxiliary door E to the door A. The minute construction of this link is not vital, though I prefer that shown in Figs. 4 and 5, in which K is astandard secured to the floor A, having within it a stem or stud, M.

N is a nut fitting over the stud or stem M and secured to it with freedom of horizontal rotation. To this not N the link G is journaledat it, thus forming a universal joint.

L is an adjusting-screw in the standard K, by which the stud H, and with it the universal joint, may be raised or lowered to obtain the proper throw for the auxiliary door E. The other end of the link G may be united to the link F at any point between the center of connection of the said link and the main and auxiliary doors by a universal joint consisting of the studJaud loose nut J, having journal ,4, as shown in Fig. 5.

It is evident that the end of the link G may be connected to the auxiliary door E, as indicated in dotted lines or as shown in Fig. 2, as the eflect is just the same except so far as the adjustment is concerned, and this would only vary to make the throw of the door E what is desired, and would depend upon the connection of the link G with the floor and also the point of connection with the door E.

When the main door D is raised on the hinge d, the link G pushes the auxiliary door E upward, causing it to swing over laterally on the parallel links F until it is clear of the guidepost 0. In lowering the door the operation is just reversed and the auxiliary door E is IOO drawn down and swung over laterally to cover up the opening between the main door D and the floor A.

The link G may be of any desired construction, but, should for obvious reasons, be provided at its ends with universal-joints, and where the upper end of the link is to connect with the door E without connection with the link F, then the universal joint will be secured directly to the wood-work of the door.

The mere details of construction here shown are not to be considered limitations of my invention, as they may evidently be varied in many ways without departing from the principles of it.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. The combination of a main door 'for a hatchway, hinged to the floor and made slightly narrower than the hatchway, an auxiliary door, a linked connection between said main and auxiliary doors, and a link connecting doors, and adjustable link G, connecting the door E with the floor.

3. The combination of a main door for a hatchway, hinged to the floor and slightly narrower than the hatchway, an auxiliary door, parallel links connecting said main and auxiliary doors, a link connecting said auxiliary door to the floor, and means, substantially as described, for vertically adjusting said link at the floor end to suit the throw of the auxiliary door.

4. The combination of a hinged main door for a hatchway covering only a part of the opening of said hatchway, an auxiliary door adapted to slide over upon said main door and connected thereto by a movable connection, and

In testimony of which invention 1 hereunto set my hand.

WILLIAM STEVENS.

Witnesses:

B10111). S. CHILD, Jr., R. M. HUNTER. 

